This idea has been merged into another idea. To comment or vote on this idea, please visit WEBFLOW-I-819 Clean asset links: Host assets on a site's Custom Domain and don't prepend the names with number ID strings.
For customers with strict firewall whitelist policies that have not whitelisted cloudfront.net, the css, image, and JS assets do not load, essentially breaking our site for those customers. It makes our site look unprofessional and reflects poorly on us.
It would be fantastic if the images, css, and js assets could be hosted behind the custom domain as well. That will reduce the likelihood that the site appears broken and simplify the process of fixing it for customers for whom it still is (e.g. we just need to tell them to whitelist our custom domain, instead of both our custom domain and cloudfront.net)